\begin{description}
 \item[API] Advanced Programming Interface \emph{or} Application programming interface
 \item[AS] Authentication Service
 \item[BWCTL] Bandwidth Control
 \item[CLI] Command-line interface
 \item[GGF] Global Grid Forum
 \item[LS] Lookup Service
 \item[MA] Measurement Archive
 \item[MP] Measurement Point
 \item[NM-WG] Network Measurement Working Group
 \item[NMS] Network Monitoring System
 \item[NMSOA] Network Monitoring Service-Oriented Architecture
 \item[NOC] Network operations center
 \item[NREN] National Research and Education Network
 \item[NSI] Network Services Interface
 \item[OID] object identifier
 \item[OGF] Open Grid Forum
 \item[PDU] Power Distribution Unit
 \item[perfSONAR] PERFormance Service Oriented Network monitoring ARchitecture
 \item[perfSONAR MDM] $\sim$ Multi-Domain Monitoring
 \item[perfSONAR NC] $\sim$ Netconf
 \item[perfSONAR-PS] $\sim$ Perl Services
 \item[RRD] Round-Robin Database
 \item[SNMP] Simple Network Managment Protocol
 \item[SOA] Service-Oritend Architecture
 \item[SOAP] Simple Object Access Protocol
 \item[TCL] Tool Command Language
 \item[TS] Transformation Service
 \item[WS] Web Service
\end{description}
